I have flagged the question for moderator attention; was that the right thing to do? Obviously, asking a question on meta about every dodgy question on Stack Overflow isn't the answer. I searched for previous questions about suspicious up-voting but didn't see any guidance.

1 Answer
1

Yes, that is an unusual pattern; not least, 2 of the votes were actually by the same user (not the OP) with two accounts (now merged).

As for why it got a spate of upvotes - it was mentioned in a chat. That by itself is not terrible, but indeed it should be upvoted on the merits of the question, only. I have responded as such in the chat.